JPS6288852A - Transmission - Google Patents

Abstract

PURPOSE:To produce the large speed ratio of an input shaft to an output shaft by meshing the input and output gears of a transmission with epicyclic gears to drive an input shaft, and thereby causing a supporting frame for the epicyclic gears to rotate during deceleration or acceleration. CONSTITUTION:An input gear 5 fixed to an input shaft 3 and an output gear 6 fixed to an output shaft 4 are meshed with an epicyclic gear 10, and a supporting frame 8 to support the epicyclic gear 10 is concentrically and rotatably fixed to the output shaft 4. When the inlet shaft 3 rotates in an arrow direction, an interlocking shaft 11 rotates in the arrow direction to make the supporting frame 8 rotate in the same direction as the inlet shaft 3. In this case, when the number of teeth of gears 12, 17 is less than that of gears 13, 16, the supporting frame 8 rotates more slowly than the input shaft 3 in its same direction. When the reduction ratio formed by the number of teeth of the above gears is 1/2, the output shaft 4 stops, and when the said ratio is less than 1/2, the output shaft 4 rotates reversely. Thus, when the supporting frame 8 rotates more slowly than the input shaft 3, the output shaft 4 rotates still more slowly than the input shaft 3. Consequently the large reduction ratio can be produced.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention reverses, stops, or decelerates the rotation of the input shaft.
This relates to a transmission that can be transmitted to the output shaft through amplification.

[Conventional technology]

Conventional transmissions include T-speed transmissions using gears, γ-speed transmissions using belts and chains, and single-speed transmissions using fluid.

[Problem that the invention seeks to solve]

Conventional transmissions such as those mentioned above have a simple structure that uses gears, belts, and chains, and it is difficult to increase the reduction ratio infinitely without using difficult machining. Although the output shaft is rotating in a fixed direction, it is difficult to stop the output shaft from reversing.

[Gamma method to solve problems]

To solve the above problems, the present invention meshes an input gear fixed to an input shaft and an output gear fixed to an output shaft with a planetary gear, and connects a support frame supporting the planetary gear to the output shaft. The input shaft is attached concentrically and rotatably to the support frame, and the interlocking shaft interlocked with the support frame and the input shaft are interlocked by interlocking means having an appropriate gear ratio.

[Effect]

Since this invention has the above configuration, when the input shaft rotates, the input gear also rotates.

At this time, since the interlocking shaft also rotates via the interlocking means, the support frame interlocked with this interlocking shaft also rotates.

In this way, the support frame of the input gear and the planetary gear rotates as the input shaft rotates, but if the input gear and the support frame have the same rotational speed and the same direction of rotation, the planetary gear will not rotate and the input gear will not rotate. Since it revolves around the output shaft at the same speed as the shaft, the rotation of the input shaft is directly transmitted to the output shaft, so the output shaft and input shaft rotate at the same speed and in the same direction.

In addition, by rotating the interlocking shaft slower than the input shaft and creating a rotation difference between the input shaft and the support frame, the gear ratio between the input shaft and the output shaft can be made extremely large, and by changing the gear ratio between the input shaft and the support frame, The gear ratio between the input and output shafts can theoretically be varied infinitely, and it is also possible to reverse the rotation by a single degree.

〔Example〕

In the first embodiment shown in FIG. 1, 1 is a case, and 2 is a lid fixed to the left side of the case by means of bolts or the like.

3 is an input shaft rotatably attached to a bearing provided on the lid 2;
4 is an output shaft rotatably mounted on a bearing provided on the right side of the case 1, and both shafts 3.4 are on the same axis,
In addition, the inner ends of both shafts 3.4 are rotatably fitted via bearings.

An input gear 5 and an output gear 6 made of bevel gears are fixed to the input shaft 3 and the output shaft 4, respectively.

A support frame 8 is rotatably attached to the output shaft 4 and meshed with the gear 6.

Reference numeral 11 denotes an interlocking shaft rotatably attached to bearings on both sides of the case 1 in the lower part of the case 1, and is parallel to the input shaft 3 and the output shaft 4.

12 is a gear fixed to the input shaft 3, 13 is a gear fixed to the interlocking shaft 11, and both gears 12 and 13 mesh with each other to connect the input shaft 3.
It constitutes an interlocking means 15 that decelerates the rotation of and transmits it to the interlocking shaft 11.

Also, the support frame 8 has an output shaft 4 and an inner gear 16.
and this gear 16 is fixed to the interlocking shaft 11.
7 to form interlocking means 18.

In the first embodiment, when the input shaft 3 rotates in the direction of the arrow in FIG. 1, the interlocking shaft 11 rotates in the direction of the arrow, causing the support frame 8 to rotate in the same direction as the input shaft 3.

In this case, if the number of teeth of the gear 12.17 is less than the number of teeth of the gear 13.16, the support frame 8 rotates twice in the same direction at a slower speed than the input shaft 3. When the reduction ratio of this number of teeth is 1/2, the output shaft 4 stops. Furthermore, when the rotational speed is reduced to 1/2 or less, the output shaft 4 rotates in the reverse direction.

In this way, when the rotation of the support frame 8 lags behind the rotation of the input shaft 3, the rotation of the output shaft 4 is further delayed compared to the input shaft 3, and a large reduction ratio is obtained.

□ The second embodiment shown in FIG. 2 is the gear 12 in FIG.
．． In place of the interlocking means 14 of 13, a continuously variable speed interlocking means 21 is used, and since the rotational directions of the shafts 4.11 and 4.11 are made to match, the intermediate gear 1 is connected between the gears 16 and 17.
Since it is the same as the first embodiment except that 9 is interposed, the same reference numerals are given.

The interlocking means 21 is of a known variable V-boule type, and includes conical members 22.23 fixed to the input shaft 3 and the interlocking shaft 11, and slides on the outside of the boss of each conical member 22.23 via a spline or the like. The effective diameter is made variable by a freely attached conical member 24.25, and a variable V-boo J26.27 is constructed.A V-belt 28 is applied to this V-pulley 26.27, and an operating lever 30 with a shaft 29 as a fulcrum is constructed. by each conical member 24
．． 25 through springs 31, 32, the effective diameter of the V-pulleys 26, 27 can be increased or decreased, and the gear ratio can be changed steplessly, such as reversing, stopping, decelerating, constant speed, or increasing speed. .

The input shaft 3 and the interlocking shaft 11 are connected by using such interlocking means 21.
By changing the gear ratio of the input shaft 3, the rotation of the support frame 8 relative to the rotation of the input shaft 3 changes widely from deceleration to constant speed to speed increase.

In this case, when the support frame 8 is decelerating with respect to the input shaft 3, the deceleration ratio of the output shaft 4 with respect to the input shaft 3 can change by a wide range, and the deceleration ratio of the input shaft 3 and output shaft 4 can be reduced. After the rotation is at a constant speed, the speed gradually increases.

Although the input gear is the output gear 6 and the planetary gear 10 is a bevel gear in the illustrated example, it may be a spur gear, and the interlocking means 21 may be any other continuously variable transmission.

〔effect〕

The transmission of this invention is as described above (an input gear fixed to an input shaft and an output gear fixed to an output shaft are meshed with a planetary gear, and a support frame supporting the planetary gear is attached to the output shaft). The input shaft is attached rotatably and is interlocked with the input shaft by an interlocking means having an appropriate gear ratio, so that when the input shaft is driven, the support of the planetary gear is By rotating the frame while decelerating or increasing speed, a large gear ratio can be obtained between the input shaft and the output shaft. Despite being able to obtain such a large gear ratio, the structure is simple and compact. It has the unique effect of being configurable.

[Brief explanation of drawings]

FIGS. 1 and 2 are longitudinal sectional front views showing each embodiment of the present invention. 3...Input shaft, 4...Output shaft, 5...Input gear, 6
. . . Output gear, 8. Support frame, 10. Planetary gear, 11. Interlocking shaft, 15.21. Interlocking means, 26.
27...Variable V pulley, 28...V belt. Patent Applicant Hiroshi Seki Bun Do Agent Kama 1) Bun 2 Figure 1 Figure 2

Claims (1)

[Claims] 1. An input gear fixed to an input shaft and an output gear fixed to an output shaft are meshed with a planetary gear, and a support frame supporting the planetary gear is made concentric with the output shaft and rotatable. A transmission in which an interlocking shaft interlocked with the support frame and the input shaft are interlocked by an interlocking means having an appropriate gear ratio. 2. The transmission according to claim 1, wherein the interlocking means for interlocking the interlocking shaft and the input shaft is a continuously variable belt transmission system using a variable V-pulley.